데이터 표
| 1980 | -9.31억 | 1996 | -10.9억 | 2012 | -62.6억 |
| 1981 | -13.7억 | 1997 | -11억 | 2013 | -58.2억 |
| 1982 | -11억 | 1998 | -14.3억 | 2014 | -35.5억 |
| 1983 | -7.13억 | 1999 | -7.67억 | 2015 | -54.6억 |
| 1984 | -7.66억 | 2000 | -5.18억 | 2016 | -42.1억 |
| 1985 | -8.25억 | 2001 | -5.22억 | 2017 | -46.1억 |
| 1986 | -13.6억 | 2002 | -9.74억 | 2018 | -46.8억 |
| 1987 | -16억 | 2003 | -9.39억 | 2019 | -47.8억 |
| 1988 | -18.4억 | 2004 | -8.18억 | 2020 | -58.4억 |
| 1989 | -20.5억 | 2005 | -24.7억 | 2021 | -26.2억 |
| 1990 | -22억 | 2006 | -65억 | 2022 | -37.9억 |
| 1991 | -25억 | 2007 | -36억 | 2023 | -13.9억 |
| 1992 | -14.8억 | 2008 | -35.9억 | 2024 | -9.55억 |
| 1993 | -14.1억 | 2009 | -49.3억 | 2025 | -32.1억 |
| 1994 | -14.8억 | 2010 | -17.3억 | 2026 | -20.2억 |
| 1995 | -14.8억 | 2011 | -26.5억 | | |
데이터 표
| 1980 | -10.2% | 1996 | -13% | 2012 | -12.8% |
| 1981 | -21% | 1997 | -10.7% | 2013 | -11% |
| 1982 | -23.2% | 1998 | -13.1% | 2014 | -5.8% |
| 1983 | -11% | 1999 | -7.2% | 2015 | -8.5% |
| 1984 | -9.6% | 2000 | -3.9% | 2016 | -6.5% |
| 1985 | -14.9% | 2001 | -3.3% | 2017 | -9.4% |
| 1986 | -18.4% | 2002 | -5.4% | 2018 | -13.9% |
| 1987 | -13.4% | 2003 | -4.4% | 2019 | -15.2% |
| 1988 | -19.3% | 2004 | -3.1% | 2020 | -16.6% |
| 1989 | -12.1% | 2005 | -7% | 2021 | -7.5% |
| 1990 | -98% | 2006 | -14.4% | 2022 | -11.3% |
| 1991 | -98.9% | 2007 | -6.1% | 2023 | -3.8% |
| 1992 | -47.6% | 2008 | -5.5% | 2024 | -3.3% |
| 1993 | -26.8% | 2009 | -9% | 2025 | -8.1% |
| 1994 | -24.8% | 2010 | -2.6% | 2026 | -4.5% |
| 1995 | -22% | 2011 | -4% | | |